ch7 horizontal ventilation Flashcards
blank ventilation is the most frequently used form of ventilation because most fires in buildings are small nuisance fires that do little damage and produce more smoke than fire
horizontal
blank are rated assemblies designed to reduce the likelihood of horizontal fire spread by compartmentalizing a building with fire-resistive seperations
fire walls
exterior masonry walls usually range in thickness from blank to blank inchest
8-12 inchest
for horizontal ventilation purposes, blank are some of the best means of creating the necessary exterior openings
windows
from the standpoint of horizontal ventilation, the two most important types of sliding doors are blank sliding doors and blank sliding fire doors
exterior, interior
the most important factors in deciding where to make the initial ventilation opening are that the exit be made as blank to the seat of the fire as possible and that it be blank the point from which attack lines will advance
close, opposite
depending on the size and efficiency of the blowers used, winds of up to blank mph may be overcome with positive pressure ventilation
25
of all the various methods of ventilating structures, blank ventilation is by far the most often used
natural horizontal
horizontal ventilation has traditionally been the area where blank and blank have been used
smoke ejectors and nozzles
smoke ejectors are usually set up in openings on the blank side of the building
lee
A fog or spray stream directed through a window or doorway with a blank degree pattern covering blank to blank percent of the opening provides the best results for ventilation
60, 85-90
when mechanically ventilating with a fog stream you should be about blank feet inside the room being cleared
2 feet
when using a blower, set the blower blank feet from the opening
6
